agricultural land resources security 农用地资源安全 agricultural climatic resources 农业气候资源 agricultural natural resources monitoring 农业自然资源监测 ..
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The implication of agricultural land resources security and its causes were analyzed. The standard plot system of agricultural land classification and its function were discussed.
该文首先分析了农用地资源安全的含义及其产生原因，论述了农用地分等标准样地体系及其基本功能；
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